• MESO: Mesoscale Discussion 1186

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jul 7 20:49:13 2021
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    ACUS11 KWNS 072049
    SPC MCD 072048=20

    Mesoscale Discussion 1186
    NWS Storm Prediction Center Norman OK
    0348 PM CDT Wed Jul 07 2021

    Areas affected...Southern NY...eastern PA...northern

    Concerning...Severe Thunderstorm Watch 344...

    Valid 072048Z - 072215Z

    The severe weather threat for Severe Thunderstorm Watch 344

    SUMMARY...The risk for damaging winds and isolated hail continues
    across the watch area, and is expected to increase in coverage over
    the next few hours.

    DISCUSSION...A cluster of severe thunderstorms was in progress at
    2040z across southwest MA, with reports of wind damage having been
    received. An isolated severe storm was also located over Essex
    County in northeast MA. The downstream environment remains
    moderately unstable and, with steep low-level lapse rates in place
    the risk for damaging winds will continue as these storms move into
    northern CT and coastal areas of northeast MA, respectively.

    West of this cluster of storms, additional scattered thunderstorms
    continue to develop/slowly intensify along the stationary front
    across southern NY, and along a confluence zone across central
    through eastern PA. This trend should continue over the next few
    hours as ample instability (around 2000 J/kg) and 20-30 kts of
    westerly effective shear remain in place to support organized
    clusters of storms. Damaging downburst winds remain the main severe

    ..Bunting.. 07/07/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!ov2hXXuJJtukEHETy_qfHoSfxwg5WOv6cGYx9Ia7CS-kJnMCGoXSzjSJCj1QqOa2CaUVJVmT$=
    for graphic product...


    LAT...LON 42497653 42767338 42637130 42717093 42307052 41677060
    41337075 41117153 40707191 40257356 40077382 40157487
    40187555 40617660 40707679 41167680 41327736 41437751
    42517762 42497653=20

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